Filter for liquids.



Patented May 29, I900.

W. REEVES.

FILTER FOR LIQUIDS.

(Application filed Feb. 15, 1900.

3 Sheets Sheet (No Model) Witn/esses 1: aoams rzws m, mnraumc,WASHINGTON u c No. 650,6". Patented May 29, I900. W. REEVES.

FILTER FOR LIQUIDS.

(Application filed Feb. 16, 1900.) (No Model.)

3 Sheets-sheaf z.

Witnesses In van/borm: NDRRXS PETERS ca. FHDYO-LlTHO-. WASHINGTON, n cyNo. 650,6". Patented May 29, I900.

W. REEVES.

FILTER FOR'LIflUIDS.

(Application filed, Feb. 15, 1900.) (No Model.) 3 Sheets-Shoot 3.

gunu" mum's PETERS 00., mom-mac, WASHINGTON, o. c,

UNITE STATES;

PATENT OFFICE.

WILFRED REEVES, or Lonnon, ENGLAND, ASSIGNOR o THE EEEvEs PATENT FILTERSCOMPANY, LIMITED, or SAME PLACE.

' FILTER FOR LIQUIDS.

$PEGITFICATION forming part of Letters Patent No. 650,611, dated May 29,1900. Application filed February 15,1900. Serial No. 5,303. (No model.)

To all whom it may concern..-

Be it known that I,WILEEED REEVES, a citi zen of England, residing at 9Fenehurch avenue, in the city of London, England, have invented certainnew and useful Improvements in Filters for Liquids, (for whichapplications for patents have been filed in Great Britain, dated January27, 1900, No. 1,764; in France,

dated January 30, 1900, and in Belgium, dated January 30, 1900,) ofwhich the following is a specification.

In the specification of Patent No. 617,771, dated January 17, 1899, isdescribed a filter having its lower part which holds the filteringmaterial tapering to a smaller diameter at the bottom and provided withannular channels at its circumference for discharge of liquid when thefilter is cleansed. There was also provided in .the upper part of thefilter a settling-chamber and primary filter, through which the liquidto be filtered had to pass before reaching the main filtering-bed. Thepresent invention relates to modifications of such filters, wherebytheir construction is simplified and the operation rendered moreeflicient, as will be described with reference to the accompanyingdrawings.

Figure l is a vertical section, and Fig. 2 is a plan, of a filteraccording to the present invention for filtering liquid under pressure.Fig. 3 is a vertical sectionof a modified construction in which thesettling-chamber and primary filter are dispensed with.

Corresponding parts in all the figures are denoted by like letters ofreference.

Referring first to Figs. land 2, the main filter-bed a occupies thelower part of the structure,which tapers to a smaller diameter at thebottom and is there provided witha hollow crown b, from which pipes c,with nozzles, radiate. The interior of the crown 6 communicates by abranching pipe with three valves d for the issue of the filtered liquid6 for entrance of cleansing liquid and f for issue of first filteredwater after cleansing. The upper part of the structure has a conicalpartition g, having an open pipe h at its top,

the space 70 between the partition g and the outer wall forming asettling-chamber of gen= eral .tapering or triangular shape from theouter wall to the center, above which are two perforated plates 'ij,having primary filtering material, such as quartz granules, betweenthem. The chamber is communicates by a branched pipe with two valves Zfor inlet of liquid to be filtered and m for draining the chamber 75.Above the main filter is fixed a cup n, communicating by a pipe with avalve p for issue of the foul clensing liquid. The pipe from the valvesZ 112 is provided with a bend r inside the chamber 7c,'which causes thewater to flow around the chamber.

The filter operates as follows: Liquid to be filtered enters by thevalve Z to the settlingchamber 70, passes up through the plates 2' j andthe primary filter between them, descends by the pipe h and the body ofthe filter, diffuses itself over the main filter through which itdescends, passes through the nozzles into the radiating pipes c andcrown b, and issues by the valve 6. A wash in the reverse direction iseffected by supplying clean liquid by the valve 6. This rises throughthe main filter, enters the cup n, and passes away by the valve 19. Thechamber 70 can be drained through the valve m.

In some cases where the liquid to be filtered is not very foul thesettling-chamber 7c and the primary filter above it may be dispensedwith, as shown in Fig. 3. In this case the So liquid to be filteredenters by a valve and pipe leading to the cup n. It overflows the cup,descends through the filter, and issues by a pipe and valve at thebottom. The filter is cleansed by supplying liquid by the valve e, andthis liquid after passing through the filter issues by the cup at and apipe and valve. The first filtered liquid after the upward cleansingissues to waste through valve f.

Having thus described the nature of this invention and the best means Iknow of carrying the same into practical effect, I claim- 1. A filterfor liquids comprising a vessel having its lower part tapering to asmaller diameter downward and charged with filter- 5 ing material, andhaving in its upper part two perforated plates with filtering materialbetween them, and under these a settlingchamber of triangular section, avalved pipe to the settling-chamber, a valved dischargezoo pipe fromnozzles below the lower filtering material, a cup situated centrallyabove the and charged with filtering material, a valved discharge-pipefrom nozzles below the filter in g material, a cup situated centrallyabove the material and communicating with avalved outlet-pipe fordischargeof fouled liquid, and

valves for inlet and outlet of the filteredand the cleansing liquids;substantiallyas described. 3; A filter for liquids/comprising a vesselhaving its lower part tapering downwardly,

and charged with filtering material, andhaving in its upper part'twoperforated plates 20 with filtering material between them, asettling-chamber underneath the upper bed and opening-upwardly, achannel leading from the upper bed to the lower bed, a valveddischarge-pipe from nozzlesbelow the lower filltering material,a cupsituated centrally above the said material and communicating with avalved outlet-pipe for discharge of fouled liquid from the cleansing ofthe filter, and

valves for inlet andoutlet of filtered and cleansing liquids,substantially as described.

- In testimony whereof I have hereunto set Jny hand in presence of twosubscribing witnesse's.

WILFRED REEVES. Vitnesses: ROBERT CARY,

OLIVER IMRAY.

